What is the significance of using ob_start() in PHP when processing headers?

When processing headers in PHP, using ob_start() is significant because it allows output buffering. This means that output is stored in a buffer rather than being sent directly to the browser. This can prevent header-related errors, such as "headers already sent" errors, which occur when headers are sent after content has already been output to the browser. 

<?php
ob_start();

// your PHP code here

ob_end_flush();

Keywords

ob_start PHP headers output buffering buffering

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